docs: update readme

Author: jpoehnelt

README.md

@@ -4,6 +4,15 @@
 
 
 
-# Everything Apps Script
+# Apps Script Tools and Projects
 
 This repository is a monorepo containing tools, projects, and more related to Apps Script.
+
+## Packages
+
+- [mjml-apps-script](packages/mjml-apps-script) - A library for using [MJML](https://mjml.io/) in Google Apps Script.
+
+## Projects
+
+- [using-mjml](projects/using-mjml) - Demo of using MJML for emails.
+- [apps-script-agent](projects/apps-script-agent) - Demonstation of how to use Google's Apps Script to build and deploy a AI powered Gmail agent using Vertex AI and Apps Script.